/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.coyote.http11;

import org.apache.tomcat.util.buf.ByteChunk;

/**
 * Constants.
 * 
 * @author Remy Maucherat
 */
public final class Constants {

	// -------------------------------------------------------------- Constants

	/**
	 * Package name.
	 */
	public static final String Package = "org.apache.coyote.http11";

	public static final int DEFAULT_CONNECTION_LINGER = -1;
	public static final int DEFAULT_CONNECTION_TIMEOUT = 60000;
	public static final int DEFAULT_CONNECTION_UPLOAD_TIMEOUT = 300000;
	public static final int DEFAULT_SERVER_SOCKET_TIMEOUT = 0;
	public static final boolean DEFAULT_TCP_NO_DELAY = true;

	/**
	 * CRLF.
	 */
	public static final String CRLF = "\r\n";

	/**
	 * Server string.
	 */
	public static final byte[] SERVER_BYTES = ByteChunk
			.convertToBytes("Server: Apache-Coyote/1.1" + CRLF);

	/**
	 * CR.
	 */
	public static final byte CR = (byte) '\r';

	/**
	 * LF.
	 */
	public static final byte LF = (byte) '\n';

	/**
	 * SP.
	 */
	public static final byte SP = (byte) ' ';

	/**
	 * HT.
	 */
	public static final byte HT = (byte) '\t';

	/**
	 * COLON.
	 */
	public static final byte COLON = (byte) ':';

	/**
	 * SEMI_COLON.
	 */
	public static final byte SEMI_COLON = (byte) ';';

	/**
	 * 'A'.
	 */
	public static final byte A = (byte) 'A';

	/**
	 * 'a'.
	 */
	public static final byte a = (byte) 'a';

	/**
	 * 'Z'.
	 */
	public static final byte Z = (byte) 'Z';

	/**
	 * '?'.
	 */
	public static final byte QUESTION = (byte) '?';

	/**
	 * Lower case offset.
	 */
	public static final byte LC_OFFSET = A - a;

	/**
	 * Default HTTP header buffer size.
	 */
	public static final int DEFAULT_HTTP_HEADER_BUFFER_SIZE = 48 * 1024;

	/* Various constant "strings" */
	public static final byte[] CRLF_BYTES = ByteChunk.convertToBytes(CRLF);
	public static final byte[] COLON_BYTES = ByteChunk.convertToBytes(": ");
	public static final String CONNECTION = "Connection";
	public static final String CLOSE = "close";
	public static final byte[] CLOSE_BYTES = ByteChunk.convertToBytes(CLOSE);
	public static final String KEEPALIVE = "keep-alive";
	public static final byte[] KEEPALIVE_BYTES = ByteChunk
			.convertToBytes(KEEPALIVE);
	public static final String CHUNKED = "chunked";
	public static final byte[] ACK_BYTES = ByteChunk
			.convertToBytes("HTTP/1.1 100 Continue" + CRLF + CRLF);
	public static final String TRANSFERENCODING = "Transfer-Encoding";
	public static final byte[] _200_BYTES = ByteChunk.convertToBytes("200");
	public static final byte[] _400_BYTES = ByteChunk.convertToBytes("400");
	public static final byte[] _404_BYTES = ByteChunk.convertToBytes("404");

	/**
	 * Identity filters (input and output).
	 */
	public static final int IDENTITY_FILTER = 0;

	/**
	 * Chunked filters (input and output).
	 */
	public static final int CHUNKED_FILTER = 1;

	/**
	 * Void filters (input and output).
	 */
	public static final int VOID_FILTER = 2;

	/**
	 * GZIP filter (output).
	 */
	public static final int GZIP_FILTER = 3;

	/**
	 * Buffered filter (input)
	 */
	public static final int BUFFERED_FILTER = 3;

	/**
	 * HTTP/1.0.
	 */
	public static final String HTTP_10 = "HTTP/1.0";

	/**
	 * HTTP/1.1.
	 */
	public static final String HTTP_11 = "HTTP/1.1";
	public static final byte[] HTTP_11_BYTES = ByteChunk
			.convertToBytes(HTTP_11);

	/**
	 * GET.
	 */
	public static final String GET = "GET";

	/**
	 * HEAD.
	 */
	public static final String HEAD = "HEAD";

	/**
	 * POST.
	 */
	public static final String POST = "POST";

}
